Every project begins with the fabric—insulation, airtightness, and quiet comfort.

Belfast home built around a 65-foot-long painting

Fabric-first decisions that prevent cold spots, condensation and comfort complaints — lessons that transfer to older Belfast homes.

New build, same physics: insulation continuity, airtightness and ventilation strategy decide whether a home stays warm, quiet and dry — or ends up cold and condensation-prone.

The Takeaways

  • Late layout changes create knock-on effects (services, structure, cost, programme).

  • Junctions and detailing beat products for comfort + moisture safety.

  • Open-plan + “wet zones” needs a ventilation strategy (not hope).

  • Big glazing / feature windows can create cold spots unless designed as part of the fabric.

What to look for
(applies to retrofits too)

  • Where warm air meets cold surfaces (edges, reveals, junctions)

  • Airtightness changes that remove “accidental ventilation”

  • Extraction/air movement in large open volumes

Project Details

Project URL:

Overall winner — BBC NI House of the Year (series 5)

By:

Project type:
New build

Location:
Belfast, NI

Credits:
Planning + structural + energy: specialists appointed by client

Privacy:
Filmed & photographed with owners’ permission; personal details removed.

My role:

  • Post-Planning Design development
  • technical coordination (fabric-first)
  • Limited early site inspections

Context:
This project is a new build, but the same building-physics rules decide whether older Belfast homes end up warm, quiet and dry — or cold and condensation-prone.

Choose a 15-min Fit Check (free) or book an on-site Retrofit Diagnostic (£200).